Smoke-consumer



(No Model.) v v I B. DANFORD & O. E. A. SAGLE. SMOKE CONSUMER.

No. 417,412. Patented Dec. 17, 1889.

IIHIHIIIIHIIIIIIIHHIIIIHlllllllllllllllllll UNITED STATES PATENT OFFICE.

EBENEZER DANFORD AND CHARLES E. A. SAGLE, OF AURORA, ILLINOIS.

SMOKE-CONSUM ER.

SPECIFICATION forming part of Letters PatentNo. 417,412, dated December 1'7, 1889.

Application filed August 27, 1889. Serial No. 322,139. (No model.)

To'aZZ whom, it may concern:

Be it known that we, EBENEZER DANFOR and CHARLES E. A. SAGLE, citizens of the United States, residing at Aurora, county of Kane, and State of Illinois, have invented certain new and useful Improvements in Smoke-Consumers, of which the following is a full, clear, and exact description, that will en'- able others to make and use the same, reference being had to the accompanying drawings, forming a part of this specification.

The object of this invention is to provide a device that will promote combustion in boiler and other furnaces and prevent the escape of smoke into the atmosphere by consuming the same before it passes into the stack or chimney, as will be hereinafter set forth.

This invention relates to an improvement on the particular appliance set forth in a former application filed May28, 1889, Serial N 0. 312,428.

Figure l is a vertical longitudinal section of a boiler and furnace embodying our improved features; Fig. 2, a transverse section in plane 2, Fig. 1, looking in the direction indicated by the arrow; and Fig. 3, a longitudinal section of one of the chambered heaters in plane 3, Fig. 2.

Referring to the drawings, A represents a steam-boiler of the marine type; B, the fire-box 5 B, the grate-bars 3 C,the smoke-stack,

. and D D the heaters or chambers in which the commingled steam and atmospheric air is received and heated preparatory to being injected into the fire.

In a former application herein referred to but one air and steam heating chamber'or pipe of a cylindrical form was shown. That particular construction and arrangement isthe furnace-door, which arrangement would not permit of the air and steam heating chamber being located transversely at the rear side of the fire-box, for the reason that the flame would be blown out through the door-opening. It was also learned that priming of a tug-boat boiler was of frequent occurrence, owing to the foul river-water, and that in consequence very moist steam would sometimes be sprayed into the furnace and the complete process of combustion greatly retarded. It was therefore found to be necessary to increase the heating-surface of the heater, as will be hereinafter set forth.

In the present application two heaters are used, each having two chambers or compartments, and are located on each side of the fire-box and lengthwise of the boiler. The

heaters D D are of an oval or double-elliptical form in cross-section, and have two chambers a a. The rear side is perfectly flat, so as to lie closely to the inclosing sides of the fire-box, while bolts inserted through the downwardlyprojecting integral flange a secure the heaters rigidly in place. This oval or flattened form is also necessary, as the heaters do not apparently take up as much space in the fire-box or combustion-chamber as those of a cylindrical form would of the same capacity.

The horizontal partition I) divides the heater or heaters into two chambers or compartments; This partition stops short of the opposite end of the heater from which the branch supply-pipes enter, leaving the opening I) and forming a communicating passage between the two chambers.

The upper parts of the heaters are provided with a number of elongated apertures d, through which the superheated air and steam are injected into the furnace over the fire. These apertures open at different angles, as shown in Fig. 2, so that a portion of the contents of the .uppcr chamber is discharged across the fire in a horizontal plane and another portion in an upward direction, so as to thoroughly mingle with and consume all of the carbon particles suspended ,in the smoke-gases. It will be observed that there are no apertures opening out from the lower chamber of the heaters, the lower chamber being intended for heating only and takes all of the moisture out of the air and steam supply before it passes into the upper chamber at the opposite end from which it entered, where it is still further heated before escaping into the fire, thus preventing any moisture from reaching the fire in case of priming. The supply-pipe E enters the boiler at the rear end and runs through the lower large flue F. The front end of the pipe E projects just far enough beyond the front end of the inelosing-flue to permit of the upper ends of the branch pipes a a" being connected thereto. The branch pipes run off to each side of the furnace in a horizontal plane and then down to and are inserted in the respective back ends of the heaters D D. In the rear projecting end of the pipe E is inserted the contracted end of the injector-nozzle G. A second nozzle H is inserted in the nozzle G, the inner end of which stops short of the tapering discharge end of the inclosing-nozzle. The interior outer end of the steam-nozzle is threaded, and the exterior part of the air-nozzle is correspondingly threaded, as at (1, so as to be adjustable with reference to the outer nozzle, so that by turning the air-nozzle in or out the steam-passage (Z between the two nozzles may be enlarged or diminished in regulating the volume of steam admitted with reference to the quantity of air passing in through the .flaring open end 9 of the companion nozzle. The steam-pipe runs from the steam-dome of the boiler and has the terminal end insorted in the side of the steam-nozzle near its longitudinal center, as shown in Fig. 1. By this arrangement the volume of air and steam admitted can be conveniently regulated with relation to each other. A very small volume of steam is required in proportion to the air volume, as practical working has demonstrated. The construction and relative arrangement of the nozzles are such that theaircurrent is drawn in with great force, the air and steam being thoroughly mixed before reaching the heaters. The volume of air and steam is heated to a high degree in passing through the main heating-flue of the boiler into the heate1's,wl1ere it is converted into an in flammable gas,which instantly ignites as it is injected into the fire, and thereby absorbs and consumes the smoke-gases given out from the fuel. The heaters might therefore be termed gas-generators, as the mixed air and steam is superheated to a high degree of temperature and of a veryinflammable character and injected into the fire under considerable pressure, thus producing a very energetic combustion. The steam and air may of course be taken in at each side of the boiler, injecting-nozzles being used for each heater.

The same arrangement of using two heaters, as herein shown, may be employed in connection with a locomotive-boiler.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. In a smoke-consuming device, a heater of. an oval or elliptical form and divided into two chambers by a horizontal partition stopping short of one end of said heater, so as to provide a communicating passage between the chambers at the opposite end from which the supply-pipe is inserted, and having a series of elongated discharge-apertures in one of said chambers, and a downwardly-projectin g integral attaching-flange, substantially as described.

2. In a smoke-consuming device, the combination of the fire-box, the double chambered heaters having discharge apertures from one chamber onlyand arranged on each side of the fire-box, and the pipes for supplying a mixed volume of air and steam to said heaters, wherein the same is superheated and then injected into the fire, substantially as set forth.

3.111 a smoke-consuming device, the combination of the fire-box, the heaters located at each side thereof, and of the construction substantially as described, the supply-pipe running longitudinally through the main flue,

nozzle with the source of supply, substan- 9 tially as and for the purpose set forth.

EBENEZER DANFORD. CHARLES E. A. SAGLE. \Vitnesses:

L. M. FREEMAN, L. 13. COUPLAND. 

